Work done in pulling up a block of wood weighing 2 KN for a length of 10 m on a smooth plane inclined at an angle of 15 degree with the horizontal is?
Correct answer: B. 5.17kJ
- A. 4.36kJ
- B. 5.17kJ
- C. 8.91kJ
- D. 9.82kJ
Explanation
Option A : Work done is 5.17kJ not 4.36kJ Option : B Option C : Work done is 5.17kJ not 8.91kJ . Option D : Work done is 5.17 kJ not 9.82kJ.
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About Work
Work is done when a force produces displacement, with its value determined by the component of force along the displacement. The topic covers positive, negative and zero work, work by variable forces from force-displacement graphs, and the connection between net work and change in kinetic energy.
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